Plow.



PATENTED MAR: 24, 1908.

0. 0. RANKIN.

PLOW.

urmouxou TILED-MAY 4. 1901.

WITNESSES: I INVENTOH WMMMM. I WWW.

UNITED STATES PATENT OFFICE.

OHAELES CALHOUN RANKIN, OF LOUISVILLE, KENTUCKY, ASSIGNOR OF ONE-THIRD TO SAMUEL T. OROFTS, OF LOUISVILLE, KENTUCKY.

PLOW.

Specification of Letters Patent.

Application filed May 4, 1907. Serial No. 371,845.

Patented March 24, 1908.

To all whom it may concern:

Be it known that I, CHARLES CALHOUN RANKIN, a citizen of the United States, residing in the city of Louisville, county of Jefferson, and State of Kentucky, have invented a new and useful Flow, of which the following is a specification.

My invention relates to improvements in plows, in which the principal parts are constructed of metal; and the objects of my improvement are, strength, lightness, compactness, simplicity, economy of labor, comparative ineXpensiveness of manufacture, durability, to avoid the decay incident to wood from the action of moisture and air, interchangeability of parts, facility of adjustment, and knock-down construction to facilitate storing, packing and shipping.

I attain these objects by means of the structure illustrated in the accompanying drawings, in which Figure 1 is a perspective view of the plow with a straight, tubular beam of rectangular cross section Fig. 2 is a perspective view of a modification with a curved, tubular beam of circular cross section.

Similar reference numerals refer to similar parts throughout the several views of the drawings. 4

The tubular beam 1, the clamp 2, the clevis 3, the adjustable brace-clip 4, the brace 6, and the handle-clip 9 constitute the principal features of the invention. The beam 1 is tubular and may be square, round, oval, elliptical or any other cross section. I prefer to make it of round tubing, preferably of steel, because it is cheapest.

In Fig. 1 a beam of square cross section is shown, and in Fig. 2 a beam of circular cross section. In the modification shown in Fig. 2, the beam is slightly bent where the stand ard is attached, in order that a clamp conforming to the beam may be placed about it and the beam always remain in the same relative position without turning either in use or when being assembled. A standardclamp, 2, preferably made of two metal plates stam ed or cast to conform to the exterior sur'ace of the beam and the standard, is placed over the beam and standard and clamped thereto by means of bolts 14 above and bolts 15 below. In Fig. 1 a regular standard is shown with clamp 2 embracing it and the beam.

In Fig. 2 a modification is shown wherein a stock 13 is used instead of standard 13, and this stock is biparted and placed over clam 2 instead of between the plates, a longer bo t 15 being used to secure the stock to the clamp. Itwill be understood that by this means stock 13 is pivotally secured to clamp 2, so that its angle relative to the beam may be adjusted. The usual brace 6 is provided for taking the stress of standard 13. This brace is secured to the beam by means of an adjustable brace-clip 4 and a clamp-bolt 5 at the lower part thereof as shown in the drawings. This brace may be placed either in front, as in Fig. 1, or in the rear, as in Fig. 2. Beam 1 being of tubing uniform in size and shape throughout its length, clip 4 may be adjusted by sliding it along the beam and fastening it at any point. By this means the proper stress may be placed upon brace 6, and when the stock (Fig. 2) is used, it may be adjusted at any angle relative to the beam desired. The moldboard S and the point 12 are of the conventional form. The clevis 3 is preferably cast of metal, hollow, so that it slips over the end of beam 1, and is slit on the lower side and provided with bolt-holes, in order that it may be clamped firmly upon the beam. A handle-clip, 9, is provided, preferably cast of metal with a hollow portion conforming to the shape of beam 1, provided underneath with a slit and clamp-bolts so that it may be clamped firmly on the rear end of the beam, and provided on the sides with clamp-sockets adapted to receive and firmly clamp tubular handles 10 and 11, or formed with channels on the sides and boltholes adapted to receive wooden handles packed in small space, when shipped, and able at angles relative to the plane passing asslenllbled by any one of ordinary skill. through the aXis of said tubular beam.

0 a1m T 7 In a plow, the combination of a tubular CHARLES OAIHOUN 5 beam, and a clevis, a standard fixture, and a Witnesses:

handle-fixture clamped about said tubular ABRAHAM KNOBEL, beam to hold by friction only and adjust- D. B. MODANIEL. 

